Originally posted by snavej If there is nothing to hold the fusion blast away from Megatron and his allies

The arc of the blast isn't a fusion reaction. A smaller shielded reaction inside the weapon provides energy for a shot.

There's no evidence to the contrary except a fixation on the name "fusion cannon".

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I don't see what would be wrong with introducing a little more science into Transformer stories once in a while. We the fandom would surely like to be seen as more than lowbrow, obsessed fantasists!

Yes, this is why we're saying no current science supports it, and the odds of any future science supporting it are incredibly low because we have a fairly good understanding of what "exponential" means.